Ole alamanuia tau taumafa ose vaega tāua ole tamaoaiga ole atunu'u, e a'afia sa'o ile soifua maloloina lautele ma tulaga lelei ole olaga. I le faiga o mea'ai mata'utia faiga, eseese valve e taua, fa'atasi ai ma alavai faitoto'a naifi u'amea maua ta'uta'ua mo latou lelei faatinoga. O nei valve e faʻaalia i lo latou umi, faʻafefeteina, ma le tumama, ma faʻaogaina lelei mo meaʻai. O le au gaosi oloa, e pei o le Like Valve (Tianjin) Co., Ltd., o loʻo taʻimua i lenei tekinolosi, tuʻuina atu alalaupapa faitotoʻa o le naifi uʻamea maualuga e faʻaleleia ai le faʻaogaina lelei ma faʻamautinoa le saogalemu i le gaosiga o meaʻai. A'o fa'atupula'ia le alamanuia, o lo'o fa'aauau pea ona fa'atupula'ia le matafaioi a ia fa'afofoga fou, fa'amalosia lo latou taua i le tausisia o tulaga lelei o taumafa.